public void MultiBQTester(int WRITERS)
{
int MAX_WRITES = 50000;
object stop = new object();
LFBlockingQueue <object> q = new LFBlockingQueue <object>();
List <Thread> wthreads = new List <Thread>();
List <BQWriter> writers = new List <BQWriter>();
for (int i = 0; i < WRITERS; i++)
{
BQWriter w = new BQWriter(MAX_WRITES, q);
writers.Add(w);
Thread t = new Thread(w.Run);
wthreads.Add(t);
}
foreach (Thread t in wthreads)
{
t.Start();
}
BQReader r = new BQReader(stop, q);
Thread read_thread = new Thread(r.Run);
read_thread.Start();
//Now, let's make sure all the writers are done:
foreach (Thread t in wthreads)
{
t.Join();
}
//Now put the stop object in:
q.Enqueue(stop);
//That should stop all the reader threads:
read_thread.Join();
int read_items = 0;
foreach (object[] o in r.Items)
{
read_items++;
BQWriter w = (BQWriter)o[0];
object data = o[1];
Assert.AreEqual(w.Items[data], data, "matching data");
w.Items.Remove(data);
}
Assert.AreEqual(read_items, MAX_WRITES * WRITERS, "All writes read");
foreach (BQWriter w in writers)
{
Assert.AreEqual(0, w.Items.Count, "Dequeued all items");
}
bool timedout;
//Take out the stop object:
object s = q.Dequeue(500, out timedout);
Assert.IsFalse(timedout, "stop containing queue timed out");
Assert.AreEqual(s, stop, "Stop removed");
q.Dequeue(500, out timedout);
Assert.IsTrue(timedout, "Empty queue timed out");
}
public void Run()
{
bool timedout;
object next;
do
{
next = _q.Dequeue(500, out timedout);
if (false == timedout)
{
if (next != _stop)
{
Items.Add((object[])next);
}
}
} while(next != _stop);
//Put stop back in:
_q.Enqueue(_stop);
}